Broach holder



Dec.1l, 1934. G. F. YAGER 1,984,104

7 BROACH HOLDER I Original Filed Dec. 15, 1930 2 Sheets-Sheetl G. F. YAGER BROACH HOLDER Original Filed Dec. -l5, 1930 2 Sheets-Sheet 2 Dec. 11, 1934 acar effa er Patented Dec. 11, 1934 PATENT orFicE.

BROACH HOLDER George F. Yager, Toledo, Ohio,

'assignor to The Hunting Brass -& Bronze Company, Toledo, Ohio, a corporation of Ohio N Original application December "15, 1930, Serial No. 502,526. Divided and this application July 3,

1933, Serial No. 678,979

6 Claims.

3 3 of Figure 2;

Figure 4 is a sectional view taken on the line 4-4 of Figure 3;

Figure 5 is a fragmentary longitudinal sectional View through the clamping jaws.

Referring now to the drawings, A and B respectively are the crossheads; C are the spindles; D are the collet nuts; are the brcach holding jaws; F and G respectively are thrust bearings for the spindles; H are the cooperating sleeves, and I are the retainer plates of broach holding means embodying my invention. As shown, the crossheads A and B are spaced apart and are movable longitudinally of an elongated horizontally disposed frame Preferably the crossheads are connected together for unitary operation by tie rods 3 and 4 respectively and are guided in their movements by plates 5 and 6 respectively secured to the frame. Any suitable means such as the crank shaft 96 and connecting rod 98 illustrated in my application, Serial No. 502,526, may be used to actuate the crossheads. The spindles C are received within sockets 7 Within the crossheads and are pro vided adjacent their inner ends in substantially parallel relation to the inner ends 8 of the sockets with integral annular flanges 9. The thrust bearings F and G are sleeved upon the spindles C in front and in rear of the flanges 9, and the sleeves H are upon the spindles between the bearings F and the retainer plates I. In fact, the construction and arrangement of the parts is such that a single plate such as I suffices to hold the spindles C, sleeves H and bearings F and G respectively in each crosshead. The spindles C are provided at their forward ends with external threads 11 and the collet nuts D are mounted upon these threads and have tapered interior surfaces 12 which serve to actuate the collet jaws 13 to urge the same into gripping relation with the breaches such as 14. Thus it will be apparent that the construction and rrangement is such that the broaches 14 may be easily and quickly inserted into and held by or removed from the collet nuts D.

While it is believed that from the foregoing description the nature and advantages of the invention will be readily apparent, I desire to have it understood that I do not limit myself to what is herein shown and described and that such changes may be resorted to when desired as fall Within the scope of what is claimed.

What I claim as my invention is:

1. Broach holding means including a body having a plurality of laterally spaced sockets therein, spindles in said sockets and provided adjacent their inner ends with annular flanges, thrust bearings on the spindles upon opposite sides of the flanges, sleeves upon the spindles and abutting the outer bearings, and means for retaining the spindles, sleeves and bearings in the sockets, comprising a single plate secured to the body having openings receiving the spindles and constituting abutments for the sleeves.

2. Broach holding means including a body g having a socket opening outwardly through one face thereof, a spindle extending into the socket and having an annular flange, thrust bearings on the spindle upon opposite sides of the flange, a sleeve on the spindle and abutting the outer bearing, and means for holding said spindle, bearings and sleeve in the body including a plate secured to the face aforesaid having an opening receiving the spindle, and constituting an abutment for the sleeve.

3. Broach holding means including a body having a socket opening outwardly through one face thereof, a spindle extending into the socket and having an annular flange substantially parallel to the inner end of the socket, thrust bearings on the spindle upon opposite sides of the flange, one of said bearings abutting the inner end of the socket, a sleeve on the spindle and abutting the other bearing, and a member secured to the face aforesaid of the body and constituting an abutment for the sleeve.

4. Broach holding means including a body having a socket therein, a spindle extending into and terminating at the inner end of said socket, said spindle being provided adjacent its inner end with a lateral projection that is substantially parallel to the inner end of the socket, and means for holding the spindle in the socket including thrust bearings on the spindle upon opposite sides of the projection, a plate secured to the body at the outer end of the socket, and a sleeve on the spindle between the plate and outermost bearing causing the innermost bearing to be held by the projection against the inner end of the socket.

5. Breach holding means including a body having a plurality of laterally spaced sockets therein, spindles extending into and terminating at the inner ends of said sockets, said spindles being provided adjacent their inner ends with lateral projections, thrust bearings on the spindles in front and in rear of the projections, sleeves on the spindles and abutting the outermost bearings, and means for retaining the spindles, sleeves and bearings in the sockets, comprising a single member upon the body forming abutments for the outer ends of the sleeves.

6. Broach holding means including a body having a socket opening outwardly through one face thereof, a spindle extending into and terminating at the inner end of said socket, and means for holding the spindle in said socket including thrust bearings on the spindle at spaced points longitudinally thereof, a plate on the spindle at the outer end of the socket and secured to the body, a projection on the spindle between the bearings, and a sleeve on the spindle between the plate and outermost bearing, the arrangement of said parts being such that the innermost bearing is held by the projection against the inner end of the socket, and the outermost bearing is held by the sleeve against the projection.

GEORGE F. YAGER. 

